if user defaults to None as explicit param, set to empty dict

Author: maxxiefjv

src/pyop/storage.py

@@ -121,6 +121,9 @@ class RedisWrapper(StorageBase):
     """
 
     def __init__(self, db_uri, collection, ttl=None, options={}):
+        if options is None:
+            options = {}
+
         if not _has_redis:
             raise ImportError("redis module is required but it is not available")
         self._db = Redis.from_url(db_uri, decode_responses=True, **options.get('redis_kwargs', {}))